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a fuse wire melts when current passing through it exceeds a certain value as in overloading and short circuiting .this breaks the circuit prventing further current flow and damage ..
Wiki User
∙ 12y ago
Wiki User
∙ 8y agoAs a safety precaution. It doesn't affect the circuit under normal circumstances.
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How do you change wire fuse for circuit breaker?
A circuit breaker does not have a wire fuse in it.
Can you replace a 15 amp fuse with a 30 amp fuse?
Not a good idea. The 15 amp fuse will be protection a #14 wire which is rated for 15 amps maximum capacity. By changing the 15 amp fuse to a 30 amp fuse you would then be allowing 30 amps maximum capacity on a #14 wire. By doubling the load the extra heat generated on the smaller wire could be enough to melt the insulation from the wire and that could cause the wire to short out. If the wire shorts out inside the wall it means the removal of the wall board to replace the wire to restore the circuit to an operational condition. The proper wire sizing for a 30 amp fuse is, #10 copper wire with an insulation rating of 90 degrees C.
What is the best suitable component for circuit protection instead of fuse?
circuit breaker, or "resettable fuse", which is a reallya small circuit breaker in the housing of a fuse
Why would a 63 amp fuse holder get hot?
The only time that fuse holders gets hot is when there is a loose connection between the fuse holder and the wire connected to the holder. If this is happening remove the supply voltage from the circuit that the fuse holder is in. Remove the wire from the holder. Cut the burned end of if there is enough wire and re install. If not enough wire, use a wire brush to get the oxidation off of the wire. Apply a coating of anti oxidation compound on the wire end and then re install into the holder. Tighten the wire into the holder very tightly. Check the spring clamping pressure of the fuse end of where the heating occurred. This spring clamping pressure is important for low resistance conductivity. If the fuse feels loose when installed change the fuse holder for a new one.
How do you wire a 240 volt street light circuit?
A 240 volt street light circuit is wired in parallel connections. In the base of the street fixture an inline fuse is connected into the circuit that goes up to the fixture to protect the lamp head.
Why the fuse wire necessary in a circuit?
It is a safety device. It is not an essential part of the circuit.
How do you change wire fuse for circuit breaker?
A circuit breaker does not have a wire fuse in it.
What wire in a circuit should contain the fuse?
The live wire
What is fuse what is it made up of?
A fuse in its simplest form - is simply a short piece of wire that is weaker than the circuit it is protecting. When the current flowing through the circuit exceeds the fuse rating, the fuse wire melts - breaking the circuit.
What is the advantage of electric fuse in an electric circuit?
A fuse is intended to be a weak link of thin wire that goes in series with a circuit. If the current becomes too high for any reason, the fuse wire melts and cuts off the supply. Without a fuse, the circuit will heat up until something else melts, which might cause a fire. So fuses are necessary to prevent electrical fires.
What will happen if a thick copper wire is used in fuse?
If a thick copper wire is used in a fuse then by definition of a fuse this device would no longer be defined as a fuse. A fuse in a circuit is used to protect the conductors feeding the load of that circuit. The circuit, if using a thick copper wire in a fuse, would then be considered as a non fused circuit.
Why does the wire from the fuse box to the head light switch burn up?
Check the headlight fuse that's INSIDE the box. If an oversized fuse has been put in the fusebox you will have problems with the wire overheating whenever there is a problem in the circuit. There is a short circuit (wire touching chassis ground) somewhere in the lighting circuit, but the wire is burning because an oversized fuse has been put in the circuit.
Why are circuit symbols used when drawing electric circuit?
It is often necessary to wire crossing
What happen if fuse is connected to neutral wire?
The fuse will be blown off in case of any fault. But the circuit will not be isolated because of the presence of fuse in nutral line. current will still flow and the line will be so dangerous.
Why is it not okay to use a fuse with a higher amperage rating in an electrical circuit?
The fuse is supposed to be the weakest link in the circuit. The circuit is rated to handle a specific load current. The wire and insulation rating of the circuit is governed by this specific load. If this load malfunctions and the load current becomes higher that what is specified, the fuse is there to break the circuit. A fuse of a higher rating than what is called for will allow a higher current to flow through the circuit which could cause the insulation on the wire to melt, the wire to burn open or components in the circuit to become unusable. Never over fuse an electrical circuit with a larger amp rated fuse.
Which do you think melts faster the wires in a circuit or wire that make up a fuse?
The fuse wire is thinner and it's designed to melt faster.
How do you choose the right fuse for the job?
The correct size fuse needed is based on the size wire used in the circuit. The size wire needed is based on the load that will be applied to the circuit. 1. AWG 14/2 wire = 15 amp fuse 2. AWG 12/2 wire = 20 amp fuse 3. AWG 10/2 wire = 30 amp fuse 4. AWG 8/2 wire = 40 amp fuse
